Alert archive / South Dakota / Frost Advisories in 2021
Frost Advisory 3, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this frost advisory at May 6, 2021, 3:02 PM CDT for 5 counties in Minnesota; 8 counties in South Dakota. It took effect at May 7, 2021, 3:00 AM CDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- May 6, 2021, 3:02 PM CDT (20:02 UTC)
- In effect from
- May 7, 2021, 3:00 AM CDT
- Expired
- May 7, 2021, 8:00 AM CDT
- In force
- 5 hr
- Issued by
- NWS Sioux Falls, SD
Counties Cottonwood County, MN, Lincoln County, MN, Lyon County, MN, Murray County, MN, Pipestone County, MN, Beadle County, SD, Brookings County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Miner County, SD, Moody County, SD, Sanborn County, SD
The radar
The Sioux Falls radar (KFSD), 66 km from the middle of the area, began a volume at 20:05 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 8.0 hours before the alert went out and 143 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1975 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
325 WWUS73 KFSD 062002 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 302 PM CDT Thu May 6 2021 MNZ071-072-080-081-097-SDZ038>040-052>056-070415- /O.NEW.KFSD.FR.Y.0003.210507T0800Z-210507T1300Z/ Lincoln-Lyon-Murray-Cottonwood-Pipestone-Beadle-Kingsbury- Brookings-Jerauld-Sanborn-Miner-Lake-Moody- 302 PM CDT Thu May 6 2021 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM CDT FRIDAY... * WHAT...Temperatures in the low to mid 30s may result in frost formation. * WHERE...Portions of central and east central South Dakota and southwest Minnesota. This includes the Tribal Lands of the Flandreau Santee Sioux Tribal Nation. * WHEN...From 3 AM to 8 AM CDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
2 follow-up statements
228 WWUS73 KFSD 070218 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 918 PM CDT Thu May 6 2021 MNZ071-072-080-081-097-SDZ038>040-052>056-071300- /O.CON.KFSD.FR.Y.0003.210507T0800Z-210507T1300Z/ Lincoln-Lyon-Murray-Cottonwood-Pipestone-Beadle-Kingsbury- Brookings-Jerauld-Sanborn-Miner-Lake-Moody- 918 PM CDT Thu May 6 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM CDT FRIDAY... * WHAT...Temperatures in the lower 30s will result in frost formation. * WHERE...Portions of central and east central South Dakota and southwest Minnesota. This includes the Tribal Lands of the Flandreau Santee Sioux Tribal Nation. * WHEN...From 3 AM to 8 AM CDT Friday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
823 WWUS73 KFSD 071249 NPWFSD URGENT - WEATHER MESSAGE National Weather Service Sioux Falls SD 749 AM CDT Fri May 7 2021 MNZ071-072-080-081-097-SDZ038>040-052>056-071400- /O.EXP.KFSD.FR.Y.0003.000000T0000Z-210507T1300Z/ Lincoln-Lyon-Murray-Cottonwood-Pipestone-Beadle-Kingsbury- Brookings-Jerauld-Sanborn-Miner-Lake-Moody- 749 AM CDT Fri May 7 2021 ...FROST ADVISORY WILL EXPIRE AT 8 AM CDT THIS MORNING... Temperatures will continue to warm through the morning therefore the Frost Advisory will be allowed to expire as scheduled. $$ For more information from the National Weather Service visit https://weather.gov/siouxfalls
Nearby
Frost Advisories in South Dakota, 2021Frost Advisories in Minnesota, 2021Every frost advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.